阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

     One morning，I was waiting at the bus stop，worried about ____（be） late for school.There were many people waiting at the bus stop，____ some of them looked very anxious and____（disappoint）．When the bus finally came，we all hurried on board.I got a place next ____the window，so I had a good view of the sidewalk.A boy on a bike ____（catch） my attention.He was riding beside the bus and waving his arms.I heard a passenger behind me shouting to the driver，but he refused ____（stop） until we reached the next stop.Still，the boy kept ____（ride）．He was carrying something over his shoulder and shouting.Finally，when we came to the next stop，the boy ran up to the door of the bus.I heard an excited conversation.Then the driver stood up and asked，“____ anyone lose a suitcase at the last stop？”A woman on the bus shouted，“Oh dear！It's____（I）．”She pushed her way to the driver and took the suitcase thankfully.Everyone on the bus began talking about what the boy had done，and the crowd of strangers____（sudden） became friendly to one another.

一组数据的最大值为60，最小值为48，且以2为组距，则应分____ 组．

定义域为R的函数$f\left(x\right)$满足$f\left(x+2\right)=2f\left(x\right)$，当$x\in 0,2)$时，$f\left(x\right)=\left\{\begin{array}{c}{x}^2-x,x\in 0,1),\\ -{\left(\frac{1}{2}\right)}^{\left|x-\frac{3}{2}\right|},x\in 1,2),\end{array}\right.$则当$x\in -4,-2)$时，函数$f\left(x\right)\ge \frac{t^2}{4}-t+\frac{1}{2}$恒成立，则实数$t$的取值范围为（   ）

材料一：及秦孝公用商君，坏井田，开阡陌，急耕战之赏，虽非古道，尤以务本之故，倾邻国而雄诸侯。

——《汉书·食货志》

材料二：商君相秦十年，宗室贵戚多怨望者。……后五月而秦孝公卒，太子立。……秦惠王车裂商君以徇，曰：“莫如商鞅反者！”遂灭商君之家。

——《史记·商君列传》

海洋历来是各国争夺的对象，为“开拓万里波涛”日本联合舰队和清朝北洋舰队相遇黄海并发生激战，此役中，为国捐躯的清朝将领是（    ）